A raw material feeding device

Abstract

This application discloses a raw material feeding device, including a feeding hopper, a cover plate at the top of the feeding hopper, a discharge cylinder at the bottom of the feeding hopper, a material leveling grid inside the discharge cylinder, and multiple support columns arranged in a circular array at the bottom of the material leveling grid, all of which are close to the inner wall of the discharge cylinder. Multiple supports located below the support columns are provided on the inner wall of the discharge cylinder, and each support is provided with a guide sleeve. The support columns extend movably into the guide sleeves, and a pressure sensor is provided at the bottom of the guide sleeves. A spring is provided between the pressure sensor and the bottom of the support column. The pressure sensor is electrically connected to a controller, and the controller is electrically connected to an indicator. This application has the advantages of automatically sensing the material discharge status in the feeding hopper and accurately determining the timing of opening the cover plate.

Description

Technical Field

[0001] This application relates to the field of material conveying technology, and in particular to a raw material feeding device. Background Technology

[0002] Currently, there are many problems to be solved in the raw material feeding process of lithium carbonate production. In order to prevent dust pollution during the feeding and transportation of lithium carbonate, a cover plate needs to be placed on the top of the feeding hopper after a certain amount of lithium carbonate powder is added. After all the lithium carbonate powder is discharged from the bottom feed port, the cover plate is opened and the corresponding amount of lithium carbonate powder is added. However, the operator cannot accurately grasp the discharge of lithium carbonate powder and may open the cover plate in advance, at which time dust will spread. Alternatively, the cover plate may be opened in a delayed manner, affecting the feeding efficiency. Therefore, it is difficult to accurately grasp the timing of opening the cover plate. Utility Model Content

[0003] The main purpose of this application is to provide a raw material feeding device, which aims to solve the technical problem that existing powder feeding hoppers cannot accurately control the discharge of lithium carbonate powder.

[0004] To achieve the above objectives, this application provides a raw material feeding device, including a feeding hopper, a cover plate at the top of the feeding hopper, a discharge cylinder at the bottom of the feeding hopper, a material leveling grid inside the discharge cylinder, a plurality of support columns arranged in a circular array at the bottom of the material leveling grid, the support columns being close to the inner wall of the discharge cylinder, a plurality of supports located below the support columns on the inner wall of the discharge cylinder, a guide sleeve being provided on each support, the support columns being movably extended into the guide sleeves, a pressure sensor being provided at the bottom of the guide sleeves, a spring being provided between the pressure sensor and the bottom of the support columns, the pressure sensor being electrically connected to a controller, and the controller being electrically connected to an indicator.

[0005] Optionally, the top of the uniform grid is provided with multiple parallel permanent magnets, which are used to adsorb metal impurities.

[0006] Optionally, one end of multiple permanent magnet rods is simultaneously connected to a support bar, which is slidably disposed on the top of the uniform grid. The other end of the multiple permanent magnet rods movably passes through the side wall of the discharge cylinder and is connected to a traction component. The traction component is used to pull out multiple permanent magnet rods. The outer wall of the discharge cylinder is provided with multiple scraping components for scraping metal impurities from the surface of the corresponding permanent magnet rods. The outer wall of the discharge cylinder is also provided with a recycling channel, in which the scraping components are located. The recycling channel is used to recycle the metal impurities scraped from the surface of the permanent magnet rods.

[0007] Optionally, the side wall of the discharge cylinder is provided with a through hole that mates with the permanent magnet rod. The diameter of the through hole is larger than the diameter of the permanent magnet rod. The scraping assembly includes a scraping ring that is movably sleeved on the permanent magnet rod. The scraping ring can fit against the outer wall of the discharge cylinder. The diameter of the scraping ring is larger than the diameter of the through hole. The outer wall of the discharge cylinder is provided with a plurality of limiting rods arranged in a ring array. The other end of the limiting rod is provided with a limiting step for contacting the scraping ring.

[0008] Optionally, a limiting ring is fixedly sleeved on the permanent magnet rod, the limiting ring being used to fit the side of the scraper ring away from the through hole.

[0009] Optionally, the traction assembly includes a first pull rope connected to one end of the permanent magnet rod, and the upper side wall of the retrieval channel has an opening for the permanent magnet rod to extend out of the opening, with the first pull rope extending out of the opening.

[0010] Optionally, the traction assembly also includes a traction block disposed on the outer wall of the recovery channel, with a first pull rope movably passing through the traction block and connected to a first limit block.

[0011] Optionally, the other end of the permanent magnet is connected to a second pull rope, which moves through the side wall of the discharge cylinder and is connected to a second limit block.

[0012] Optionally, a tank is provided at the bottom of the discharge cylinder, and a collection box is provided on the side wall of the tank, with the collection box connected to the bottom of the recycling channel.

[0013] Optionally, a handle is provided on the top of the cover plate. Both the cover plate and the handle are made of non-metallic materials. A dust collection pipe is connected to the side wall of the feeding hopper near its top. The dust collection pipe is a telescopic corrugated pipe and is used to connect to the dust removal device.

[0014] The beneficial effects that this application can achieve are as follows:

[0015] This application involves adding a certain amount of lithium carbonate raw material into the feeding hopper and placing a cover plate on top of it. The lithium carbonate raw material can then be evenly discharged through a uniform feeding grid. At this time, due to its certain thickness within the feeding hopper, the lithium carbonate raw material can exert a certain pressure on the uniform feeding grid, thereby causing the support column at the bottom of the uniform feeding grid to exert a squeezing force on the spring inside the guide sleeve. The pressure data can be detected in real time by a pressure sensor. As the lithium carbonate raw material is gradually discharged, the pressure data detected by the pressure sensor also decreases. When it decreases to a set threshold, the pressure sensor can send a signal to the controller, which then controls the prompt device to operate, reminding the operator to open the cover plate in time to add the next batch of lithium carbonate raw material. This allows for accurate control of the lithium carbonate powder discharge situation and precise timing for opening the cover plate. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0017] Figure 1 This is a schematic diagram of the structure of a raw material feeding device according to an embodiment of this application;

[0018] Figure 2 This is a schematic diagram of the connection structure of the uniform grid and its bottom connecting accessories in an embodiment of this application;

[0019] Figure 3 This is a schematic diagram of the structure of a raw material feeding device pulling out a permanent magnet rod in an embodiment of this application;

[0020] Figure 4 for Figure 3 A magnified schematic diagram of the local structure at point A;

[0021] Figure 5 This is a top-down view of the connection structure of multiple permanent magnet rods and their connecting accessories in an embodiment of this application.

[0022] Figure label:

[0023] 110-Feeding hopper, 120-Cover plate, 130-Discharge cylinder, 131-Through hole, 140-Equalizing grid, 150-Support column, 160-Support, 170-Guide sleeve, 180-Pressure sensor, 190-Spring, 210-Controller, 220-Indicator, 230-Permanent magnet rod, 240-Support bar, 250-Traction assembly, 251-First pull rope, 252-Traction block, 253-First limit block, 260-Scraper assembly, 261-Limit rod, 2611-Limit step, 262-Scraper ring, 270-Recovery channel, 271-Opening, 280-Limit ring, 290-Second pull rope, 310-Second limit block, 320-Tank, 330-Collection box, 340-Handle, 350-Dust collection pipe.

[0024] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0026] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0027] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0028] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0029] Example

[0030] Reference Figures 1-5This embodiment provides a raw material feeding device, including a feeding hopper 110, a cover plate 120 on the top of the feeding hopper 110, a discharge cylinder 130 at the bottom of the feeding hopper 110, a material leveling grid 140 inside the discharge cylinder 130, a plurality of support columns 150 arranged in a circular array at the bottom of the material leveling grid 140, the support columns 150 being close to the inner wall of the discharge cylinder 130, a plurality of supports 160 located below the support columns 150 on the inner wall of the discharge cylinder 130, a guide sleeve 170 on each support 160, the support column 150 extending movably into the guide sleeve 170, a pressure sensor 180 at the bottom of the guide sleeve 170, a spring 190 between the pressure sensor 180 and the bottom of the support column 150, the pressure sensor 180 being electrically connected to a controller 210, and the controller 210 being electrically connected to an indicator 220.

[0031] In this embodiment, after a certain amount of lithium carbonate raw material is added to the feeding hopper 110 and a cover plate 120 is placed on top of it, the lithium carbonate raw material can be evenly discharged through the uniform grid 140. At this time, because the lithium carbonate raw material has a certain thickness in the feeding hopper 110, it can generate a certain pressure on the uniform grid 140, thereby causing the support column 150 at the bottom of the uniform grid 140 to exert a squeezing force on the spring 190 in the guide sleeve 170. At this time, the pressure data can be detected in real time by the pressure sensor 180. When all the lithium carbonate raw material is discharged, the pressure data detected by the pressure sensor 180 also decreases. When it decreases to a set threshold, the pressure sensor 180 can send a signal to the controller 210. The controller 210 then controls the prompt device 220 to operate to remind the operator to open the cover plate 120 in time to add the next batch of lithium carbonate raw material, so as to accurately grasp the discharge of lithium carbonate powder and accurately grasp the timing of opening the cover plate 120.

[0032] It should be noted that the controller 210 can be a PLC controller of model S7-200; the indicator 220 can be an audible and visual alarm or warning light, etc.; the installation position of the controller 210 and the indicator 220 should not be restricted. For example, the controller 210 can be set on the outer wall of the discharge cylinder 130, and the indicator 220 can be set in a place that is easy for the operator to observe; the feeding hopper 110 can be made of stainless steel and can be designed with a structure with a round bottom and a square top.

[0033] As an optional implementation, the top of the uniform grid 140 is provided with multiple parallel permanent magnet rods 230. The permanent magnet rods 230 are used to adsorb metal impurities. By adsorbing metal impurities in the raw materials through the permanent magnet rods 230, the quality of the raw materials can be improved.

[0034] As an optional implementation, one end of multiple permanent magnet rods 230 is simultaneously connected to a support bar 240, the support bar 240 is slidably disposed on the top of the uniform grid 140, and the other end of the multiple permanent magnet rods 230 movably passes through the side wall of the discharge cylinder 130 and is connected to a traction component 250. The traction component 250 is used to pull out the multiple permanent magnet rods 230. The outer wall of the discharge cylinder 130 is provided with multiple scraping components 260 for scraping metal impurities from the surface of the corresponding permanent magnet rods 230. The outer wall of the discharge cylinder 130 is also provided with a recovery channel 270, the scraping components 260 are located in the recovery channel 270, and the recovery channel 270 is used to recover the metal impurities scraped from the surface of the permanent magnet rods 230.

[0035] In this embodiment, when too many metal impurities adhere to the surface of the permanent magnet rod 230, the metal impurities need to be cleaned off to ensure the impurity removal effect. During cleaning, multiple permanent magnet rods 230 can be pulled out directly from the side wall of the discharge cylinder 130 by the traction component 250. Since one end of multiple permanent magnet rods 230 is connected by the support bar 240 at the same time, they can be pulled out synchronously. During the pulling process, the support bar 240 can slide on the top of the uniform grid 140. After being pulled out, the permanent magnet rods 230 can have their surface metal impurities scraped off by the corresponding scraping component 260. At the same time, the scraped metal impurities can be recycled through the recycling channel 270, thereby achieving the goal of cleaning impurities without disassembling the permanent magnet rods 230. The operation is convenient and quick, and the cleaning efficiency is high.

[0036] As an optional implementation, the side wall of the discharge cylinder 130 is provided with a through hole 131 that cooperates with the permanent magnet rod 230. The diameter of the through hole 131 is larger than the diameter of the permanent magnet rod 230 (so that metal impurities on its surface can pass through the through hole 131). The scraping assembly 260 includes a scraping ring 262 movably sleeved on the permanent magnet rod 230. The scraping ring 262 can fit against the outer wall of the discharge cylinder 130. The diameter of the scraping ring 262 is larger than the diameter of the through hole 131. The outer wall of the discharge cylinder 130 is provided with a plurality of limiting rods 261 arranged in a ring array. The other end of the limiting rod 261 is provided with a limiting step 2611 for contacting the scraping ring 262.

[0037] In this embodiment, during the discharge of raw materials from the feeding hopper 110, the scraper ring 262 can act as a seal to prevent the raw materials from overflowing from the through hole 131 on the side wall of the discharge cylinder 130. When it is necessary to scrape off the metal impurities on the permanent magnet rod 230 (at this time, feeding into the feeding hopper 110 is stopped), the permanent magnet rod 230 is pulled outward, and the scraper ring 262 moves accordingly until it is blocked by the limiting step 2611 and cannot move. The circular space formed by multiple limiting steps 2611 allows the permanent magnet rod 230 to pass through. At this time, the permanent magnet rod 230 can continue to move outward, and the scraper ring 262 can gradually scrape off the metal impurities on the permanent magnet rod 230 to perform the scraping function until the support bar 240 adheres to the inner wall of the discharge cylinder 130, which is the limit position, completing the impurity cleaning operation. Then the permanent magnet rod 230 can be reset. The operation is convenient and quick, and the impurities on the permanent magnet rod 230 can be cleaned quickly.

[0038] As an optional implementation, a limiting ring 280 is fixedly sleeved on the permanent magnet rod 230. The limiting ring 280 is used to fit the side of the scraper ring 262 away from the through hole 131.

[0039] In this embodiment, when the permanent magnet rod 230 is reset, the scraper ring 262 can be pressed against the outer wall of the discharge cylinder 130 by the limiting ring 280, thereby preventing the limiting ring 280 from dislodging from the permanent magnet rod 230 and thus playing a limiting role.

[0040] As an optional implementation, the traction assembly 250 includes a first pull rope 251 connected to one end of the permanent magnet rod 230, and the upper side wall of the recovery channel 270 is provided with an opening 271 for the permanent magnet rod 230 to extend out of the opening 271.

[0041] In this embodiment, when it is necessary to pull out the permanent magnet rod 230, the first pull rope 251 can be pulled directly. Here, the first pull rope 251 can be connected to only one end of the permanent magnet rod 230 in the center position. Under the action of the support bar 240, multiple permanent magnet rods 230 can be pulled out simultaneously. After cleaning, a section of the permanent magnet rod 230 can extend out of the opening 271 to facilitate observation of whether it is cleaned, so as to determine whether it is necessary to perform cleaning operation again.

[0042] As an optional implementation, the traction assembly 250 also includes a traction block 252 disposed on the outer wall of the recovery channel 270, with a first pull rope 251 movably passing through the traction block 252 and connected to a first limiting block 253.

[0043] In this embodiment, the operator can easily operate the first pull rope 251 by holding the first limiting block 253. At the same time, when the permanent magnet rod 230 is reset, the first limiting block 253 cannot pass through the traction block 252, thereby preventing the first pull rope 251 from being pulled into the recycling channel 270.

[0044] As an optional implementation, the other end of the permanent magnet rod 230 is connected to a second pull rope 290, which movably passes through the side wall of the discharge cylinder 130 and is connected to a second limiting block 310.

[0045] In this embodiment, when it is necessary to reset the permanent magnet rod 230, the second pull rope 290 can be pulled in the opposite direction to pull the permanent magnet rod 230. Under the action of the support bar 240, multiple permanent magnet rods 230 can be pulled into the discharge cylinder 130 at the same time. The operation is convenient and quick. Similarly, the second limit block 310 can prevent the second pull rope 290 from being pulled into the discharge cylinder 130.

[0046] As an optional implementation, a tank 320 is provided at the bottom of the discharge cylinder 130 (the two are detachably connected). The raw materials after discharge can be collected in the tank 320 for subsequent overall packaging and transportation. A collection box 330 (the two are detachably connected) is provided on the side wall of the tank 320. The collection box 330 is connected to the bottom of the recycling channel 270 and is used to collect the removed metal impurities.

[0047] As an optional implementation, a handle 340 is provided on the top of the cover plate 120. Both the cover plate 120 and the handle 340 are made of non-metallic materials (such as non-metallic polytetrafluoroethylene) to prevent the metal cover plate 120 from rubbing against the feeding hopper 110 and generating new metal impurities. A dust collection pipe 350 is connected to the side wall of the feeding hopper 110 near its top. The dust collection pipe 350 is a telescopic corrugated pipe and is used to connect to a dust collection device (not shown in the figure), thereby suppressing the spread of dust. The telescopic corrugated pipe has the ability to extend and retract in any direction, which makes it easy to connect with dust collection devices in different locations to meet the needs of the device in different layout spaces. The dust collection device can be an existing bag filter or cyclone dust collector.

[0048] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A raw material feeding device characterized by comprising: The device includes a feeding hopper with a cover plate on top and a discharge cylinder at the bottom. Inside the discharge cylinder is a material leveling grid, and at the bottom of the grid are multiple support columns arranged in a circular array. These support columns are all close to the inner wall of the discharge cylinder. The inner wall of the discharge cylinder has multiple supports located below the support columns, each with a guide sleeve. The support columns extend movably into the guide sleeves. A pressure sensor is located at the bottom of the guide sleeve, and a spring is installed between the pressure sensor and the bottom of the support column. The pressure sensor is electrically connected to a controller, and the controller is electrically connected to an indicator.

2. A raw material feeding device according to claim 1, wherein The top of the uniform material grid is equipped with multiple parallel permanent magnets, which are used to adsorb metal impurities.

3. A raw material feeding device according to claim 2, wherein One end of multiple permanent magnet rods is connected to a support bar, which is slidably positioned on the top of the uniform material grid. The other end of the multiple permanent magnet rods moves through the side wall of the discharge cylinder and is connected to a traction component. The traction component is used to pull out multiple permanent magnet rods. The outer wall of the discharge cylinder is provided with multiple scraping components for scraping metal impurities from the surface of the corresponding permanent magnet rods. The outer wall of the discharge cylinder is also provided with a recycling channel, in which the scraping components are located. The recycling channel is used to recover the metal impurities scraped from the surface of the permanent magnet rods.

4. A raw material feeding device according to claim 3, wherein The side wall of the discharge cylinder has a through hole that mates with the permanent magnet rod. The diameter of the through hole is larger than the diameter of the permanent magnet rod. The scraping assembly includes a scraping ring that is movably sleeved on the permanent magnet rod. The scraping ring can fit against the outer wall of the discharge cylinder. The diameter of the scraping ring is larger than the diameter of the through hole. The outer wall of the discharge cylinder is provided with multiple limiting rods arranged in a ring array. The other end of the limiting rod is provided with a limiting step for contacting the scraping ring.

5. A raw material feeding device according to claim 4, wherein A limiting ring is fixedly sleeved on the permanent magnet rod. The limiting ring is used to fit the side of the scraper ring away from the through hole.

6. A raw material feeding device according to any one of claims 3 to 5, wherein The traction assembly includes a first pull rope connected to one end of the permanent magnet rod, and an opening for the permanent magnet rod to extend out of the upper side wall of the retrieval channel. The first pull rope extends out of the opening.

7. A raw material feeding device according to claim 6, wherein The traction assembly also includes a traction block disposed on the outer wall of the recovery channel, with a first pull rope movably passing through the traction block and connected to a first limit block.

8. A raw material feeding device according to claim 6, wherein The other end of the permanent magnet rod is connected to a second pull rope, which moves through the side wall of the discharge cylinder and is connected to a second limit block.

9. A raw material feeding device according to claim 3, wherein A tank is installed at the bottom of the discharge cylinder, and a collection box is installed on the side wall of the tank. The collection box is connected to the bottom of the recycling channel.

10. A raw material feeding device according to claim 1, wherein A handle is provided on the top of the cover plate. Both the cover plate and the handle are made of non-metallic materials. A dust collection pipe is connected to the side wall of the feeding hopper near its top. The dust collection pipe is a telescopic corrugated pipe and is used to connect to the dust removal device.

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